Messages in this thread | | | Date | Fri, 25 Oct 2013 12:19:43 +0200 | From | Ingo Molnar <> | Subject | Re: perf/ftrace lockup on 3.12-rc6 with trigger code |
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* Steven Rostedt <rostedt@goodmis.org> wrote:
> > Urgh, I had turned those on to try to debug something and forgot > > to disable. I feel like I saw this problem before I had those > > enabled so I guess I have to start from scratch fuzzing to see > > if I can get a more generally reproducible trace.
Btw., even if various config options are enabled, we don't want the kernel to lock up. So it might not be _the_ bug you are looking, but it certainly looks like _a_ bug.
> Looks like something is incorrectly enabling function tracer > within perf. Peter told me that there's some ref count bug that > may use data after being freed on exit. > > I tried the program that you attached in you previous email, and > was not able to hit the bug. Are you able to hit the bug with that > code each time?
A full .config and a SHA1 of the tested tree would definitely be nice!
Thanks,
Ingo
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